Are gxp and impala police brakes the same size? I have seen multiple threads that say they both have 12.7" rotors and then others that say the gxp is 323mm and the impala has 303mm. Can anyone clarify?
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10-11-2020
Are gxp and impala police brakes the same size? I have seen multiple threads that say they both have 12.7" rotors and then others that say the gxp is 323mm and the impala has 303mm. Can anyone clarify?
10-11-2020
Impala brakes are smaller than GXP brakes.
302.8 for Impala and 323 for GXP.
If you want solid front rotors for the GXP you need front brakes for a Buick Allure/LaCrosse (super) with the 5.3 V8 engine. They are the same 323mm with non drilled rotors. The AC Delco part number is 18A2414.
You can probably find rotors at a NAPA store too if you went that route.
10-12-2020
would those calipers and brackets from the Buick bolt right up to a GP?
10-13-2020
Maybe.
You'll need to do your own homework there. Look at rockauto and start cross referencing part numbers to see what might be the same.
Or go to a store and ask to see a caliper for a GXP and a caliper for a Buick.
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